394144844 has 6 divisors (see below), whose sum is σ = 689753484. Its totient is φ = 197072420.

The previous prime is 394144843. The next prime is 394144903. The reversal of 394144844 is 448441493.

It is not an unprimeable number, because it can be changed into a prime (394144841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49268102 + ... + 49268109.

It is an arithmetic number, because the mean of its divisors is an integer number (114958914).

Almost surely, 2^394144844 is an apocalyptic number.

It is an amenable number.

394144844 is a deficient number, since it is larger than the sum of its proper divisors (295608640).

394144844 is a wasteful number, since it uses less digits than its factorization.

394144844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98536215 (or 98536213 counting only the distinct ones).

The product of its digits is 221184, while the sum is 41.

The square root of 394144844 is about 19853.0814736655. The cubic root of 394144844 is about 733.1935176055.

The spelling of 394144844 in words is "three hundred ninety-four million, one hundred forty-four thousand, eight hundred forty-four".